Patent US3127905A successfully refreshed from Google Patents.
US3127905A
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Valve seat unit
Assignee: Sulzer AG
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Filing: 1961-02-28
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Granted: 1964-04-07
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Expires: 1981-02-28
Abstract
No abstract record available.
Inventors
- 👤 Ernst F Vogeli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:33
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/34; F16K1/42; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6851; Y10T137/7036
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
A VALVE SEAT UNIT FOR PASSING A HIGH TEMPERATURE COMPRESSIBLE FLUID HAVING DIFFERENT TEMPERATURES ON THE INPUT AND OUTPUT SIDES OF THE UNIT, COMPRISING: A VALVE SEAT ELEMENT HAVING AN ANNULAR END SURFACE FORMING A VALVE SEAT, SAID VALVE SEAT ELEMENT HAVING A CIRCULAR PORTION COAXIAL OF SAID VALVE SEAT, A PROTECTIVE ELEMENT HAVING A CIRCULAR PORTION CORRESPONDING TO SAID CIRCULAR PORTION OF SAID SEAT ELEMENT AND BEING PLACED CONCENTRICALLY OF SAID CIRCULAR PORTION OF SAID SEAT ELEMENT, A NARROW CLEARANCE BETWEEN SAID VALVE SEAT ELEMENT AND SAID PROTECTIVE ELEMENT, SAID CLEARANCE HAVING AN OPEN END ADJACENT TO SAID VALVE SEAT, ONE OF SAID ELEMENTS HAVING A LIP PORTION ADJACENT TO SAID VALVE SEAT AND OVERLYING SAID OPEN END, SAID ELEMENTS BEING CONSTRUCTED AND ARRANGED SO AS TO CLOSE THE OPPOSITE END OF SAID CLEARANCE, AND A STAGNANT FLUID IN SAID CLEARANCE FOR IMPEDING HEAT FLOW THROUGH SAID VALVE SEAT ELEMENT.
Claim 2
Dependent Claim
151 words
A VALVE SEAT UNIT FOR PASSING A HIGH TEMPERATURE COMPRESSIBLE FLUID HAVING DIFFERENT TEMPERATURES ON THE INPUT AND OUTPUT SIDES OF THE UNIT, COMPRISING: A VALVE SEAT ELEMENT HAVING AN ANNULAR END SURFACE FORMING A VALVE SEAT, SAID VALVE SEAT ELEMENT HAVING A CIRCULAR PORTION COAXIAL OF SAID VALVE SEAT, A PROTECTIVE ELEMENT HAVING A CIRCULAR PORTION CORRESPONDING TO SAID CIRCULAR PORTION OF SAID SEAT ELEMENT AND BEING PLACED CONCENTRICALLY OF SAID CIRCULAR PORTION OF SAID SEAT ELEMENT, A NARROW CLEARANCE BETWEEN SAID VALVE SEAT ELEMENT AND SAID PROTECTIVE ELEMENT, SAID CLEARANCE HAVING AN OPEN END ADJACENT TO SAID VALVE SEAT, ONE OF SAID ELEMENTS HAVING A LIP PORTION ADJACENT TO SAID VALVE SEAT AND OVERLYING SAID OPEN END, SAID ELEMENTS BEING CONSTRUCTED AND ARRANGED SO AS TO CLOSE THE OPPOSITE END OF SAID CLEARANCE, AND A STAGNANT FLUID IN SAID CLEARANCE FOR IMPEDING HEAT FLOW THROUGH SAID VALVE SEAT ELEMENT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |